Anyone ever tried retrofitting the OEM Parking Distance Backup feature into their Expedition? I have an 2000 XLT that did not come with it, but my wife would like to have it now. I've had good luck fitting other OEM things thus far (ie front foglamps were already prewired).

 

I added an aftermarket set in mine, but it wasn't even an option back in 98. I think it was like $38 and came from Hong Kong.